#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	/*unsigned int a = 10;*/
	/*printf("%d\n", sizeof(int));
	int* p = NULL;
	printf("%d\n", sizeof(p));
	int* arr[4];
	printf("%d\n", sizeof(arr));
	return 0;*/
	int i = -20;
	//
	int j = 10;
	printf("%d\n", i + j);
	return 0;
}